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Figure 1.
(A) Musculoskeletal ultrasound demonstrated an echogenic irregular focus above the surface of the distal femoral bone with distal acoustic shadowing (longitudinal scan). (B) Plain radiography of the right femur disclosed smooth, lamellated periosteal new bone formation, consistent with hypertrophic osteoarthropathy. (C) A bone scan showed irregular increased uptake involving the distal femur bilaterally. (D) Computed tomography of the chest showed a small mass at the right lung.